#3979B4#3979B4

#3979B4 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.113 H 248.9°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3979B4
RGB	rgb(57, 121, 180)
HSL	hsl(209, 52%, 46%)
HSV	hsv(209, 68%, 71%)
CMYK	cmyk(68.3%, 32.8%, 0%, 29.4%)
CIE-LAB	lab(49.30, -1.08, -37.19)
CIE-LCH	lch(49.30, 37.21, 268.33°)
OKLab	oklab(56.17% -0.0407 -0.1053)
OKLCH	oklch(56.17% 0.113 248.9)
XYZ	xyz(16.7599, 17.8381, 45.7310)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979B4 #B47439

analogous

#39B4B2 #3979B4 #393CB4

triadic

#3979B4 #B43979 #79B439

tetradic

#3979B4 #B239B4 #B47439 #3CB439

square

#3979B4 #B239B4 #B47439 #3CB439

split-complementary

#3979B4 #B4393C #B4B239

monochromatic

#1C3B57 #2A5A86 #3979B4 #5E97CC #8DB5DB

Accessibility & contrast

On white

4.60

#3979B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#3979B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3979B4

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979B4	#FFFFFF	#000000	##FFFFFF
##3979B4	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7CB7

Deuteranopia (green-blind)

#4E70B3

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3979b4;
/* rgb */ color: rgb(57, 121, 180);
/* oklch */ color: oklch(56.2% 0.113 248.9);

Tailwind

colors: {
  custom: {
    50: '#7d9fcb',
    500: '#3979b4',
    950: '#000000',
  },
}

SCSS

$custom: #3979b4;
$custom-light: #7d9fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3979b4",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 180
  },
  "hsl": {
    "h": 208.78,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56168,
    "c": 0.11294,
    "h": 248.9
  },
  "luminance": 0.1784
}

Semantic roles & 50–950 ramp

primary

#3979B4

secondary

#C5A383

accent

#914CDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3979B4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →